JP2756880B2 - Decorement method of inorganic fiber insulation tube - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention automatically separates a heat insulating cylinder wound on a core metal from the core metal when continuously manufacturing the heat insulating cylinder from a mat made of inorganic fiber such as glass wool. (Hereinafter referred to as decentering).

[0002]

2. Description of the Related Art The method of decentering is disclosed in JP-B-48-28328.
As shown in Japanese Patent Publication No. JP-A-2005-115, a method of installing one de-centering device at the de-centering position and performing de-centering by intermittent motion is disclosed in
As disclosed in Japanese Patent Application Laid-Open No. 3-30374, the method is roughly classified into a method of performing decentering by continuous motion.

[0003] The method disclosed in Japanese Patent Publication No. 48-28328 has the advantage that the structure of the decentering machine is relatively simple and the equipment is inexpensive.
To increase the cycle speed, increase the drawing speed,
A quality defect occurs in that the end portion of the heat retaining cylinder that has been subjected to the pull-out pressure is crushed by the sudden compression force or the whole is softened.

[0004] The method disclosed in Japanese Patent Publication No. 53-30374 has the advantage that the work efficiency can be increased without deteriorating the quality of the heat retaining cylinder, since the decentering is performed during continuous movement.
There are drawbacks in that the structure of the de-centering machine is relatively complicated, equipment costs are high, and maintenance costs are high.

[0005]

SUMMARY OF THE INVENTION In view of the fact that the above-mentioned conventional de-centering method cannot efficiently and efficiently perform de-centering without deteriorating the quality of the heat retaining cylinder, the present invention provides a de-centering method. By disposing two de-centring machines in the center, and alternately de-centering by intermittent motion, by providing a method that can economically and highly efficient de-centration without deteriorating the quality, the inorganic fiber insulation cylinder The task is to increase the production volume.

[0006]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, there is provided a cored bar with a heat insulating tube formed of inorganic fiber wound around a cored bar. With the intermittently moving conveyor, it is held so that it can be picked up, continuously sent to the decentering position and stopped, and by two decentering devices arranged above the decentering position, every time the conveyor is stopped The cored bar with the heat retaining cylinder is picked up by the cored bar gripping arm of the decentering device in the preceding order, and the heat retaining cylinder extracting member is operated. It is returned to the transport conveyor, and waits for picking up the cored bar with the heat retaining cylinder at the next stop of the transporting conveyor. Returning the sampling member to the original position in two units It has a structure that causes the de-core device.

According to the second aspect of the present invention, the metal core around which the heat insulating cylinder made of inorganic fiber is wound is supported by a V-shaped attachment that opens upward on the conveyor, and
With respect to the transfer direction of the conveyor, the respective core metal gripping arms of the table are sequentially moved forward and backward from the front and rear directions toward the V-shaped attachment at the decentering position, and the axes of the respective core metal gripping arms in the forward and backward directions. Is located within the opening angle of the V-shaped attachment.

[0008]

In order to clarify the features of the operation of each of the first and second aspects of the present invention, steps of a conventional decentering method using one decentering apparatus A shown in FIG. 4 will be described.

In FIG. 4, a core C with a heat retaining tube around which a heat retaining tube B made of inorganic fiber is wound is brought to a decentering position X immediately below a decentering device A by an intermittently moving conveyor D. , While being placed on the V-shaped attachment E.

As shown by the broken line G in FIG. 5, the cycle of the intermittent movement of the conveyor D is stopped only for the time T1 of the decentering operation, and then the cored bar with the heat retaining cylinder which receives the decentering is supported. This is a cycle of moving during the time T2 and stopping again to guide the V-shaped attachment E to the decentering position X.

As shown in FIG. 4, when a single de-centring device A is used, the core C from which the heat retaining tube B has been removed remains in the de-centring device A. Before this, a step of returning the core metal C to the conveyor D side is required.

Therefore, the time T subject to the decentering action
5, as shown by the fold line H in FIG. 5, the gripping stroke a of the core C with the heat retaining cylinder at the decentering position X by the core metal gripping arm F of the decentering device A, the rising stroke b, and the heat retaining cylinder. B withdrawing process C, conveyor core D with core bar C pulled out of heat retaining tube B
In order to return to the above, five strokes, that is, a downward stroke d of the core metal gripping arm F and a gripping release stroke e of the core metal C, must be performed.

After the completion of the withdrawal process C of the heat retaining cylinder B, in the return stroke f in which the withdrawn member that has performed the withdrawal operation returns to the original position, the core metal C with the next heat retaining cylinder is brought to the decentering position X. Needless to say, it should be completed by the time.

In the conventional decentering operation, the gripping stroke a
Is 1 second, the ascent stroke b is also 1 second, the withdrawal stroke c is 2.5 seconds,
The descent stroke d takes one second, the grip release stroke e takes one second, and the return stroke f takes 2.5 seconds.

Therefore, the time T1 subjected to the decentering action is about 6.5 seconds, the movement time T2 is about 2.1 seconds,
The total time of the time T1 and the time T2 is about 8.6 seconds.

Means for shortening the decentering time and improving the production efficiency include, of course, shortening the steps of gripping, ascending, descending, and releasing gripping, but the largest factor is the drawing stroke. It is a time reduction and an increase in the drawing speed.However, an increase in the drawing speed causes a sudden compression force to act on the end of the heat retaining cylinder, and the end is crushed and the quality is reduced. It is the present situation when one de-centring device A is used that the de-centering efficiency cannot be improved.

On the other hand, in the invention of claim 1, every time the conveyor is stopped, the cored bar with the heat retaining cylinder is picked up by the cored bar gripping arm of the decentering device in advance, and the heat retaining cylinder removing member is operated. Immediately, the removed core metal gripped by the core metal gripping arm of the next core removal device is returned to the transport conveyor, and the next time the transport conveyor stops, it is on standby to pick up the core metal with a heat retaining cylinder.
When the number of the decentering devices is two, the following process is performed during the intermittent movement of the transport conveyor indicated by the broken line I in FIG.

That is, the transport conveyor stop time TS
As shown by the folding line J in FIG. 5, the gripping process a1 and the ascending process b1 by the core metal gripping arm of the first decentering device are performed. Subsequently, the first decentering device enters the drawing process c1. At the same time as the ascending step, as shown by the fold line K, a lowering step d2 of the cored bar gripping arm for holding the decentering core of the second decentering apparatus and a releasing step e2 of the cored bar are performed. Is in a holding standby state of the cored bar with the heat retaining cylinder at that position.

Since the de-centering operation by the first de-centering device is performed irrespective of the behavior of the conveyor, the conveyor is operated only for the time TM at the same time as the completion of the gripping release process e2, and the next core metal with a heat retaining cylinder is provided. To the decentering position.

The processes performed during the stop time TS are only the gripping process a1, the ascending process b1, the descending process d2, and the releasing process e2. As described above, each process requires only one second. The stop time of the conveyor is about 4 seconds.

The time required for the movement of the conveyor is independent of the number of the decentering devices. When calculated from the case where the number of the decentering devices is one, the time TM is about 2.1 seconds. Shortening time is also important in improving production efficiency.

In the present invention, when two decentering devices are used, the total time of the stop time TS and the time TM is about 6.2 seconds.

When two decentering devices are used according to the first aspect of the present invention, the descending stroke d1 for holding and releasing the extracted core metal of the first decentering device is the same as the ascent stroke b2 of the second decentering device. Since it is performed immediately after, the drawing process C1 of the first decentering device is
The decentering may be performed before the completion of the ascending step b2 of the second decentering device, has a sufficient time margin, and can be decentered within several times as long as using one decentering device. The decentering can be performed at a slow speed without damaging the heat retaining cylinder.

As is apparent from FIG. 5, as a result of shortening the stop time TS of the transport conveyor, the number of times of decentering per unit time is increased, and the decentering efficiency is improved.

According to the second aspect of the present invention, the V-shaped attachment at the decentering position for receiving the metal core of the conveyor is provided.
Since the core metal gripping arms of the two decentering devices are sequentially advanced and retracted from both front and rear directions in the transfer direction of the conveyor, and the axis in the advance and retreat direction is located within the opening angle of the V-shaped attachment, the core metal gripping arm is provided. Without causing interference between the arms and interference between the core metal gripping arm and the V-shaped attachment, picking up the core metal wound around the heat retaining tube and returning the decored core metal to the conveyor.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a manufacturing process of an inorganic fiber insulation tube to which the present invention is applied, and shows a mat 2 of inorganic fibers such as glass fibers supplied from a raw cotton supply device 1.
Is wound on a cored bar by a winder 3, passed through an outer diameter regulating device 4 and put into a dryer 5, and a binder is cured by the dryer 5.
After molding, the core is conveyed to the decentering position by the conveyor 6 and separated from the heat retaining cylinder and the core metal by the decentering device R. After separation, the core metal is supplied to the winding machine 3 again, and the same cycle is repeated. On the other hand, the heat retaining cylinder is made into a heat retaining cylinder 11 as a final product after passing through an ear cutting machine S, a vertical cutting machine T, and a stamping machine U.

In the above process, the conveyor 6 intermittently moves, and stops at a predetermined timing the attachment for receiving the core around which the inorganic fiber insulation tube is wound, at the decentering position immediately below the decentering device R. Let it.

FIGS. 2 and 3 are schematic views of an apparatus for carrying out both the first and second aspects of the present invention. The conveyor 6 intermittently moving in the direction of the arrow L has a V-shaped attachment 8 for the same transport. , 9 are attached.

The metal core 10 around which the heat insulating tube 11 made of inorganic fiber is wound has attachments 8,
9 and the core 10 is brought to the decentering position X, the conveyor 6 stops for the stop time TS.

Immediately above the decentering position, a first decentering device 1
2 and a second de-centering device 13 are arranged. The two de-centering devices set the cored bar gripping arms 14 and 15 in the same vertical plane parallel to the length direction of the conveyor 6 with a double arrow. It is provided so that it can advance and retreat in the M and N directions.

In the illustrated example, the core metal gripping arm 14 moves forward and backward in the transition direction indicated by the arrow L of the transport conveyor 6 and advances and retreats toward the V-shaped attachments 8 and 9. The conveyor 6 is assembled so as to face rearward with respect to the transition direction indicated by the arrow L and to advance and retreat toward the V-shaped attachments 8 and 9.

The opening angle θ of the V-shaped attachments 8 and 9
1, the intersection angle θ2 between the axes O and P in the forward and backward directions indicated by the double arrows M and N of the double-core gripping arms 14 and 15 is made smaller, and the axes O and P open the V-shaped attachments 8 and 9. It is assembled so as to be located within the angle θ1.

The first and second decentering devices each include a decentering member 17 that reciprocates in a double arrow Q direction along a guide rod 16 that is parallel to the metal core receiving surfaces of the V-shaped attachments 8 and 9. The decentering plate 18 is gripped by the core metal gripping arms 14 and 15, abuts against the end surface 19 of the heat insulating cylinder 11 on the raised core metal 10, and moves to a position indicated by a chain line 20 to keep the temperature. The tube 11 is removed from the cored bar 10 and returned to the position indicated by the solid line.

The core metal 10 from which the heat retaining cylinder 11 has been removed is returned into the V-shaped attachments 8 and 9 again by the lowering of the core metal gripping arms 14 and 15.

The operation is performed by the operations of the first and second decentering devices (12, 13) and the intermittent movement of the conveyor (6).
The method of each invention of claim 2 is as described with reference to FIG.

That is, in FIG. 2, the second decentering device 1
The third core metal gripping arm 15 is at the ascending position by gripping the extracted core metal 10A from which the heat insulating cylinder 11 has been extracted, and moves the core 10B with the next-order heat insulating cylinder from which the conveyor 6 should extract the heat insulating cylinder 11. When brought to the decentering position X and stopped, the cored bar gripping arm 14 of the first decentering device 12 grips and rises the cored bar 10B with the heat retaining cylinder.

Next, the core holding arm 15 of the second decentering device 13
Lowers, and the core 10 is removed into the V-shaped attachment 8A.
A is released, and at that position the next cored metal 10
Prepare for gripping C.

The conveyor 6 is provided with the cored bar 1
The process moves until 0C occupies the decentering position X.

The core-holding arm 14 of the first decentering device 12 rises and enters a decentering process, in which the decentering member 17 moves to a position indicated by a chain line 20, and removes the heat retaining cylinder 11 from the core 10B.

As soon as the core bar 10C with the heat retaining cylinder occupies the decentering position X, the core bar gripping arm 15 of the second decentering device 13 grips the core bar 10C and rises.

By the time the core metal gripping arm 15 is lifted, the extraction process of the heat retaining cylinder 11 in the first decentering device 12 is completed, and the core metal gripping arm 14 grips the extraction core metal 10B. Simultaneously with the completion of the lifting of the core metal gripping arm 15, the core metal gripping arm 15 is lowered to receive the extracted core metal 10 </ b> B in the V-shaped attachment 8 </ b> A, release the grip, and stay at that position.

The decentering member 17 of the first decentering device 12 enters a return stroke after the removal of the heat retaining cylinder 11 is completed.

The conveyor 6 is provided with a cored bar 1 with a heat insulating cylinder.
Move until OD occupies decentering position X.

The returning process of the decentering member 17 of the first decentering device 12 is completed until the core bar 10D with the heat retaining cylinder occupies the decentering position X, and the first decentering device 12 is again decentered. The process starts, and the process described above is repeated.

In each of the steps described above, the axes O, P of the core metal gripping arms 14, 15 in the forward and backward directions indicated by the double arrows M, N are shown.
Are positioned within the opening angle θ1 of the V-shaped attachments 8, 9, so that the V-shaped attachments 8, 9 do not interfere with the cores or the core-bar gripping arms 14, 15 at the time of elevating the cores. Does not occur.

[0046]

According to the first aspect of the present invention, the decentering is alternately performed by the two decentering devices.
It only needs to be completed before the start of the decentering process in the rear order, and there is no limit of completion within the stop time of the conveyor,
There is no need to increase the speed at which the heat retaining cylinder is removed to improve the decentrating efficiency.Therefore, it is possible to improve the decentrating efficiency without damaging the heat retaining cylinder and to increase the production amount of the inorganic fiber heat retaining cylinder. Play.

According to the second aspect of the invention, there is an effect that the decentering can be performed smoothly without causing interference between the V-shaped attachment and the cored bar or the decentering device.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a manufacturing process of a heat insulating cylinder made of inorganic fibers.

FIG. 2 is a schematic front view of the decentering device.

FIG. 3 is a schematic right side view of the one shown in FIG. 2;

FIG. 4 is a schematic front view of an example of a conventional decentering device.

FIG. 5 is an explanatory diagram of a work process in a case where a conveyor and one decentering device and two decentering devices are used.

[Explanation of symbols]

 6,7 Conveyor 8,9 V-shaped attachment 10 Core bar 11 Heat retaining tube 12,13 De-centering device 14,15 Core bar gripping arm L Transfer conveyor shift direction O, P Axis of core bar gripping arm X-axis de-centering Position θ1 Open angle of V-shaped attachment

Continuation of front page (56) References JP-A-54-16769 (JP, A) JP-A-50-28054 (JP, A) JP-A-50-4461 (JP, A) JP-A-49-130551 (JP, A) , A) JP-B 53-30374 (JP, B2) JP-B 48-28328 (JP, B1) JP-B 52-9864 (JP, B1)

Claims (2)

(57) [Claims] The present invention relates to a method for continuously holding a metal core with a heat insulating cylinder formed by winding a molded and hardened inorganic fiber heat insulating tube around a metal core so that it can be picked up by an intermittently moving conveyor. It is sent to the decentering position and stopped, and each time the conveyor is stopped, the cored bar with the heat retaining cylinder is removed by the two decentering devices disposed above the decentering position. With the gripping arm picked up, the heat retaining cylinder removal member is activated, and the core metal of the next core removal device is immediately returned to the conveyor, and the core metal with the thermal insulation cylinder when the next transport conveyor stops. While waiting to be picked up, by the time of the next pick-up of the cored bar with the heat retaining cylinder of the preceding de-centering device,
A method for decentering an inorganic fiber-made heat insulating cylinder, characterized by sequentially causing two de-centring devices to return the heat insulating cylinder removing member of the device to the original position. 2. A core metal around which an inorganic fiber insulation tube is wound is supported by a V-shaped attachment that opens upwardly on a transport conveyor, and each core metal gripping arm of two de-core devices is transported. With respect to the moving direction of the conveyor, it was moved forward and backward sequentially from both front and rear directions toward the V-shaped attachment at the decentering position, and the axis of the moving direction of each cored bar gripping arm was positioned within the opening angle of the V-shaped attachment. A method for decentering an inorganic fiber heat retaining cylinder according to claim 1.